| How to make Java web start doesn't pop up security setting |
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Index ‹ java-programmer
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- 2
- newbie: "reference to object is ambiguous" errorHi!
I have this error compilling my application that I have created with
netbeans:
JFrameSample.java:164: reference to Object is ambiguous, both class
org.omg.CORBA.Object in org.omg.CORBA and class java.lang.Object
in java.lang match
new Object [][] {
^
1 error
How can I fix it? I need both: org.omg.CORBA and java.lang.*
any ideas?
Thanks!
LaCo
- 3
- [OT] Re: Yet Another Web Application Mess...Hi,
Roedy Green wrote:
>... in the early 80...
> It will be that class's concern alone that
> Germans have a two part zip code.
Note that this was true in the early 80es but is no longer true since...
ah... the late 80es.
SCNR,
Ingo,
33615 Bielefeld
- 5
- Starting the RMI Serverhi,
I have a class which tests to see if an rmi server is bound to the rmi
registry, if not it binds it and if the registry is not running it starts
one with
Process child = Runtime.getRuntime().exec("batch file").
then binds the server to the newly running registry
It does this in a while(true) with a break; when the server is bound to the
registry.
This class does what I want. I have now tried to convert this into a bean,
and have all of the variables and the get/set methods to access them via the
ide propery sheet. However, when I drop this onto a project the code runs
(straightaway in the ide forte & beanbox, without me compiling and running
the project I have dropped it into) - ie the while loop runs immediatly and
does not break; - it goes crazy and starts opening windows. What have I
done wrong - I don't think I have changed the code much since the standalone
calss (apart from the get/set methods, replacing strings with String vars) ?
The code which does all the work is in the default constructor (moved from
main in the original class). Does the ide instantiate the bean when dropped
from the palette onto a project? If so, how can I resolve the issue, if not
then why is the code running without me compiling/running the project?
I have also had trouble with the setSecurityManager(new
RMISecurityManager()) and have been tinkering with the polcy files to see if
that is fixable.
thanks
Mike
- 5
- destructor neededI have objects that are added as listeners
to various system events (such as change of
language or units etc.).
To subscribe to such events I typically call
someManager.addListener(this); and the "this"
object will be added in a subscription list
of someManager.
My problem is when these objects are no longer
needed. Normally they would be GC'd, but because
of the subscription references they are not,
and the memory is in effect lost.
My current approach is to have a destroy()
method on these objects where I unsubscribe
to system events (removeListener). I am then
forced to think C++ and figure out when the
object actually dies and call the destroy()
method there, which is a pain as it may
include calling destroy() of children objects
etc. and in general it will be very hard to
get rid of them all.
As I assume my architechture is commonplace,
some of you might have a brigther solution
to the problem?
Thanks!
- 5
- Comparing two long numbersJohn B. Matthews <email***@***.com> wrote:
>> I meant (Math.sqrt(5.)-1)/2, which is theoretically the same, but
>> numerically more stable, since the divisor is simpler.
>> But then it would be Math.PHI, and at least as exact as each of the
>> formulae, if not better than both. :-)
> You're right: I inverted but didn't simplify! But isn't
> (Math.sqrt(5.)-1)/2 equal to 1 / phi?
IIRC, PHI is the one with a "1" before the decimal point, so, yes,
your aspect ration was near 1/PHI actually. The other solution
of "x = 1/x + 1" is -1/PHI (-0.618...)
Just hold the height fixed, and make the width of your component
<wish>Math.PHI</wish> times longer. Or if really the width is
given, then make the height a PHI'th.
PS: I think we should think about ending this subthread, shouldn't we?
- 7
- Sun J2SE 1.4.2 max heap sizeHi there !
Can anyone confirm what is the max heap size for the VM in Sun's J2SE
1.4.2 SDK (for windows 64b Itanium 2) ?
In the documentation it is mentioned that for Solaris we have a 64b
address space but I couldn't find anything regarding wintel 64b and I
would like to confirm.
Thanks/Brgds
Joao
- 7
- Bug#365408: Millions of men use thisGive your woman extraordinary pleasure and extraordinary orgasms.
http://www.Plixiets.com/
Too hot to handle
--
To UNSUBSCRIBE, email to email***@***.com
with a subject of "unsubscribe". Trouble? Contact email***@***.com
- 9
- ORBSocketFactory in JDK15I've created an ORBSocketFactory for use in JDK14. I now need to create one
for JDK15. It seems that the interface has substantially changed and that
it no longer provides the IOR, which I need access to to decide what kind of
socket to create.
The JDK14 classes had extensive javadocs. The JDK15 classes have zippo.
Can someone provide some useful tips on porting?
Regards,
Alan
- 10
- Why does JMenuItem react to right button?In all the applications that I know, menu items react only to mouse
left-click. Swing JMenuItem, however, reacts to any mouse button click.
Swing JButton (which also extends AbstractButton) behaves as expected.
Does anybody know why? Is there any way to change this behavior?
Thanks in advance,
Diego
- 10
- Problem With Eclipse IDE and perforce plugin.Hi I am running Eclipse SDK Version: 3.1.0 Build id: I20050627-1435
It has perforce plugin P4WSAD Client API Team provider core and
Provider UI all version 2005.2.3573
Each time I compile the project I got follows exception. I does not
prevent from working successfully but kind annoing.
Error 2006-10-19 10:46:56.703 Problems occurred when invoking code from
plug-in: "org.eclipse.core.resources".
java.lang.NullPointerException
at
com.perforce.team.ui.actions.TeamAction.getShell(TeamAction.java:154)
at
com.perforce.team.ui.actions.AddEditDeleteAction.doAddEditDelete(AddEditDeleteAction.java:70)
at
com.perforce.team.ui.PerforceMarkerManager.resourceChanged(PerforceMarkerManager.java:111)
at
org.eclipse.core.internal.events.NotificationManager$2.run(NotificationManager.java:276)
at
org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044)
at org.eclipse.core.runtime.Platform.run(Platform.java:783)
at
org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:270)
at
org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:144)
at
org.eclipse.core.internal.resources.Workspace.broadcastBuildEvent(Workspace.java:185)
at
org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:140)
at
org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:200)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:76)
Thank u Vlad.
- 11
- [ANNOUNCEMENT]:VTD-XML released under GPL I am pleased to announce that version 0.5 of VTD-XML -- a new,
non-extractive, Java-base XML processing API licensed under GPL
-- is now freely available on sourceforge.net. For source code,
documentation, detailed description of API and code examples,
please visit
http://vtd-xml.sf.net
Capable of random-access, VTD-XML attempts to be both memory
efficient and high performance. The starting point of this project is
the observation that, for XML documents that don't declare entities
in DTD, tokenization can indeed be done by only recording the starting
offset and length of a token. A discussion on this subject appeared
in a recently article on xml.com
(http://www.xml.com/pub/a/2004/05/19/parsing.html).
The core technology of VTD-XML is a binary format specification
called Virtual Token Descriptor (VTD). A VTD record is a 64-bit integer
that encodes the starting offset, length, type and nesting depth of a
token in an XML document. Because VTD records don't contain actually
token content, they work alongside of the original XML document, which
is maintained intact in memory by the processing model.
VTD's memory-conserving features can be summarized as follows:
* Avoid Per-object overhead -- In many VM-based object-oriented
programming languages, per-object allocation incurs a small amount
of memory overhead. A VTD record is immune to the overhead because
it is not an object.
* Bulk-allocation of storage -- Fixed in length, VTD records can be
stored in large memory blocks, which are more efficient to allocate
and GC. By allocating a large array for 4096 VTD records, one incurs
the per-array overhead (16 bytes in JDK 1.4) only once across 4096
records, thus reducing per-record overhead to very little.
Our benchmark indicates that VTD-XML processes XML at the performance
level similar to (and often better than) SAX with NULL content handler.
The memory usage is typically between 1.3x ~ 1.6x of the size of the
document, with "1" being the document itself.
Other features included in this release are:
* Incremental update -- VTD-XML allows one to modify content of XML
without touching irrelevant parts of the document.
* Content extraction -- VTD-XML also allows one to pull an element
out of XML in its serialized format. This can be an important
feature for partial signing/encryption of SOAP payload for
WS-security.
In the upcoming releases, we plan to add the persistence support so
that one can save/load VTD to/from the disk along with the XML documents
to avoid repetitive parsing in read-only situations. XPATH support is
also on the development roadmap. However, we would like to collect as
many suggestions and bug reports before taking the next step.
Your input and suggestions are very important to make VTD-XML a truly
useful XML processor.
Thanks,
Jimmy Zhang
- 13
- Spring/Tomcat/Ant/Java developmentHi there,
I am trying to build my first application with the Spring framework,
Apache Tomcat and Ant. I am having trouble accessing the application.
When I try to build it with Ant I get this error:
/home/workspace/springapp/build.xml:78: taskdef class
org.apache.catalina.ant.InstallTask cannot be found
Here is my build.properties file:
appserver.home=home/apache-tomcat-5.5.20
appserver.name=tomcat
deploy.path=${appserver.home}/webapps
tomcat.manager.url=http://localhost:8080/manager
tomcat.manager.username=<username>
tomcat.manager.password=<password>
And build.xml (just where the problem is occuring, since the whole file
is rather lengthy):
<taskdef name="install"
classname="org.apache.catalina.ant.InstallTask">
<classpath>
<path
location="${appserver.home}/server/lib/catalina-ant.jar"/>
</classpath>
</taskdef>
<taskdef name="reload"
classname="org.apache.catalina.ant.ReloadTask">
<classpath>
<path
location="${appserver.home}/server/lib/catalina-ant.jar"/>
</classpath>
</taskdef>
<taskdef name="list" classname="org.apache.catalina.ant.ListTask">
<classpath>
<path
location="${appserver.home}/server/lib/catalina-ant.jar"/>
</classpath>
</taskdef>
<taskdef name="start"
classname="org.apache.catalina.ant.StartTask">
<classpath>
<path
location="${appserver.home}/server/lib/catalina-ant.jar"/>
</classpath>
</taskdef>
<taskdef name="stop" classname="org.apache.catalina.ant.StopTask">
<classpath>
<path
location="${appserver.home}/server/lib/catalina-ant.jar"/>
</classpath>
</taskdef>
Does anyone have a clue as to what I'm doing wrong??
Many thanks,
Courtney
- 13
- Multiple Inheritance In Javahi everyone
this is my first post since i joined the group a week ago.
I m working with java for a year now since i come from a C++
background i can't help comparing the two languages.
While studying for java i found many books stating that java does not
support multiple inheritance i don't fully agree with this notion
(please don't hate me for that).
Though it is true that one cannot extend more than one class at a time
which makes perfect sense
since all the classes in java are derived from Object class and
multiple extensions would
cause multiple objects of Object to exist in the code which could be
undesirable.However java could
have provided a concept similar to virtual base classes in C++ but it
would have to be implicit like the extension to
the Object class and moreover multiple calls to the virtual base
class's(Object) constructor would have to be avoided.
(in C++ the compiler donot call the constructor of a virtual base class
from immediate derivations
rather it allows the class which is extending multiple derivations of
the virtual base class to call its
constructor directly, something which is not legal for ordinary base
classes) .Java could not provide a solution like this
since the only way to call the superclass constructor is by keyword
super which can call the constructor of
the immediate superclass only.So it is true that allowing multiple
extensions would have caused more problems
than it could solve.Still while creating patterns multiple inheritance
is sometimes inevitable.The solution to this
problem is interface.An interface in java is used to create a model of
a class,it just declare the behaviour(methods) that
a class must implement.It is worth noting that code reusabilty ,a
criteria generally used to define inheritance,while implementing an
interface is nil.That is why implementing an interface is not qualified
as inheritance.However if you have ever indulged yourself in creating
design patterns you would know that inheritance is more than just code
reusability rather in my opinion code reusability is just a consequence
of implementing inheritance in programming languages. Java allows a
class to implement more than one interface in this way a class can
implement 'behaviours' of multiple classes and thus to an extent
solving the multiple inheritance problem(without providing code
reusability).
So the question is that is it alright to say that java does not
support multiple inheritance?
nirmal.
- 13
- Register Now - BOF 36 JBoss SEAM and JavaServerFacesHello world,
This is a quick reminder that the BOF 36 is still on track as
scheduled for the 16th of April. If you are in or around London area
and think you would like to attend but missed the initial
announcement, well here's the link again
ttp://www.jroller.com/javawug/entry/javawug_bof_36_jboss_seam.
Secondly, I would also like to formally announce that there is a Code
Camp holding on the 19th of April at the same venue. More about the
Code Camp later.
Please note that these are TOTALLY FREE events organised by the London
based JavaWUG. So, just put your name down and come along.
http://www.jroller.com/javawug/entry/javawug_bof_36_jboss_seam#register
If you have any queries or need something clarified, please leave a
comment on this page.
Evans Anyokwu
http://www.javawug.org
- 13
- Clob trim leaves open cursorsHi,
I have a program which inserts/updates hundreds of clob values in an
Oracle database table. I'm getting a "maximum open cursors" error
when I run this program:
ORA-01000: maximum open cursors exceeded
ORA-06512: at "SYS.DBMS_LOB", line 527
To troubleshoot, I tried checking the v$open_cursor table periodically
during the program run by running this SQL query:
select user_name, sql_text from v$open_cursor
The vast majority of the open cursors had the following sql_text
value:
begin dbms_lob.trim (:1, :2); end;
I ran this program before without problems; the only major thing that
I've changed is to add a clob.trim() call, which I realized was
necessary in case the new clob value was longer than the old clob
value.
Below is the method that's being called repeatedly, where
"retrieveClobQuery" is an SQL query to select the clob value, and
"clobData" is the new clob value to be inserted. The same Connection
(conn) is used throughout. A new Statement is created and closed each
time. (I tried rewriting the code to use the same Statement
throughout, but it didn't seem to make a difference.)
public void singleClobUpdate(String retrieveClobQuery, String
clobData) {
Statement stmt = null;
try {
conn.setAutoCommit(false);
stmt = conn.createStatement();
// Use "for update" parameter to lock the row
ResultSet rs = stmt.executeQuery(retrieveClobQuery + " for
update");
if (rs.next()) {
// Get clob value and cast to oracle.sql.CLOB
CLOB clob = (CLOB)rs.getObject(1);
// Write the data to the clob object
Writer writer = clob.getCharacterOutputStream();
writer.write(clobData);
writer.flush();
writer.close();
// trim clob in case new clob contains less data than
previous one
clob.trim(clobData.length());
}
// Commit changes to release the lock
conn.commit();
conn.setAutoCommit(true);
stmt.close();
}
catch (Exception e) {
e.printStackTrace();
if (stmt != null) {
try {
stmt.close();
}
catch (SQLException e) {}
}
}
}
Any help would be greatly appreciated.
Thanks!
|
| Author |
Message |
jrefactors
|
 Posted: 2004-11-29 23:34:00 |
Top |
java-programmer, How to make Java web start doesn't pop up security setting
Everytime when we first launched Java web start, it will pop up a
security setting dialog box. I heard there are some way to disable it.
Any ideas? Please advise.
thanks!!
|
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Andrew Thompson
|
| Posted: 2004-11-30 0:08:00 |
Top |
java-programmer >> How to make Java web start doesn't pop up security setting
On 29 Nov 2004 07:33:43 -0800, Matt wrote:
> Everytime when we first launched Java web start, it will pop up a
> security setting dialog box. I heard there are some way to disable it.
You heard wrong.
That is to warn the user they are about to accept code
that might upload their personal details before formatting
their drives.
So in short, no. Or if you find a way of doing it, let us
know so that we can demand a patch from Sun.
--
Andrew Thompson
http://www.PhySci.org/codes/ Web & IT Help
http://www.PhySci.org/ Open-source software suite
http://www.1point1C.org/ Science & Technology
http://www.LensEscapes.com/ Images that escape the mundane
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bcd
|
| Posted: 2004-11-30 0:17:00 |
Top |
java-programmer >> How to make Java web start doesn't pop up security setting
In article <email***@***.com>,
Matt <email***@***.com> wrote:
>Everytime when we first launched Java web start, it will pop up a
>security setting dialog box. I heard there are some way to disable it.
I'm not exactly sure what you mean. However, if your web start apps
don't request any permissions from the host system, they will download
and start without asking the user any questions.
If they do request permissions and are NOT signed, they will just
plain old don't start.
If they request permissions and are signed, the user will tend to be
asked whether or not to accept the installation. I don't know if you
can pre-approve certain certificates. If you can, then presumably it
would be possible to have a web start app that requests permissions of
the system to install without prompting the user.
Cheers
Bent D
--
Bent Dalager - email***@***.com - http://www.pvv.org/~bcd
powered by emacs
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Andrew Thompson
|
| Posted: 2004-11-30 0:32:00 |
Top |
java-programmer >> How to make Java web start doesn't pop up security setting
On Mon, 29 Nov 2004 16:17:02 +0000 (UTC), Bent C Dalager wrote:
> If they request permissions and are signed, the user will tend to be
> asked
The user *will* be asked. No tendency about it, though..
>..whether or not to accept the installation. I don't know if you
> can pre-approve certain certificates.
..the user can choose to 'Trust all code from this supplier'
to avoid prompts for later JWS installs.
--
Andrew Thompson
http://www.PhySci.org/codes/ Web & IT Help
http://www.PhySci.org/ Open-source software suite
http://www.1point1C.org/ Science & Technology
http://www.LensEscapes.com/ Images that escape the mundane
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Index ‹ java-programmer |
- Next
- 1
- 2
- FTPClient and CopyStreamAdapter stop sometimesI have an applet which Downloads some files from an FTP(S) Server.
Mostly everything works fine, but sometimes the application "stops"
for a long time (several minutes) after the "RETR filename" command.
PErhaps someone knows this problem or has an idea.
Thank you in advance for any hint,
Susanne
Here is some of my code:
try {
InputStream stO =
new BufferedInputStream(
ftps.retrieveFileStream(fileName),
ftps.getBufferSize());
org.apache.commons.net.io.Util.copyStream(
stO,
fout,
ftps.getBufferSize(),
//
org.apache.commons.net.io.CopyStreamEvent.UNKNOWN_STREAM_SIZE,
length,
new org.apache.commons.net.io.CopyStreamAdapter() {
public void bytesTransferred(long
totalBytesTransferred,
int bytesTransferred,
long streamSize) {
changeSupport.firePropertyChange(FTPPERCENT, null,
totalBytesTransferred*100/length);
}
});
} catch (Exception e) {
e.printStackTrace();
}
- 3
- Cell phone java questionAre there any sources of information on Java programming of Nokia phones?
Esp. w/ code examples about IRda ja network connetions...
- 4
- Tutorial on java beansHi,
I am newbie to Java, though I know the syntax, OOP and have done
some small applications using it. Can someone suggest me a useful
tutorial to learn java beans.
Thanks in Advance
- 5
- Struts Rapid DevelopmentHi,
I'm looking for a tool, which lets me build web applications using
struts in a rapid development manner.
I know that there exist several tools out there, however I focusing on
the commercial ones, like:
- Camino
- Adalon
- Struts Studio
Can somebody recommend one of them? Which of them is the most
sophisticated and feature reach, when it comes to building large
webapplications?
Thanks,
Fritz
- 6
- You'll be alright.Hi Pandora Xero,
Even though it was more than obvious to everyone,
you felt compelled to make this confession:
" If I'm talking about anything,
I'm talking out my ass. "
Stick in there kid, You'll be alright.
P.S.
Can I help you get an ISP ?
Google is the mark of a troll.
- 7
- abstract vs. finalLew wrote:
> It is not the compiler's responsibility to find test code; it's the compiler's
> responsibility to check the compilability of the artifact itself.
>
> Your idea that there should be a tool, perhaps as part of JUnit or similar
> framework, to check for test coverage is a good one.
(Isn't "test coverage" a stronger notion that just "every entity has a test",
more like "every /code path/ has a test"?)
> You could use the presence of such a tool as an evaluative factor in choosing
> an IDE.
>
> But it is no part of what the compiler should do.
Clearly we have different opinions on what compilers "should", or
perhaps "should not" do. I think it's clearly /useful/ for a compiler
to [be able to] note that there's no use made of some declared entity [1]
in some codebase and I would not apply a "should not" to remove a
useful feature. (Usual tradeoff remarks apply.)
I think I'm done.
[1] I spelled `entity` "thingy" in earlier posts, for want of remembering
the word; I'm not trying to change what I meant.
--
Chris "and you've got to be ready" Dollin
Hewlett-Packard Limited Cain Road, Bracknell, registered no:
registered office: Berks RG12 1HN 690597 England
- 8
- Elipse and ATG DynamoGreetings,
I am new to Eclipse and am hoping to get it to work with ATG Dynamo.
Has anyone used Eclipse in conjunction with ATG's application server?
Eclipse does not seem to support JHTML syntax highlighting. Am I
wrong? Or is there a plug-in somewhere? Thanks.
-jay
- 9
- RandomAccessFile vs. FileChannelAside from memory mapped files for very large files, is there any
benefit between using the RandomAccessFile class and the FileChannel
class? They seem to be abstractions of the same low level I/O.
- 10
- xp sp2 download problem would someone please explain to me why this routine work
on clients ranging from windows (including XP), to linux, but don't work in
my winXP clients that install SP2 ??? the download window don't appears.
OutputStream out = response.getOutputStream();
response.setContentType("application/octet-stream");
//* response.setHeader("Content-Disposition","attachment;
filename=\"" +request.getRequestURI()+ "\";");
FileInputStream fis = new FileInputStream(nomeFile);
byte[] buffer = new byte[1024];
int byteLetti;
while((byteLetti = fis.read(buffer)) != -1){
out.write(buffer, 0, byteLetti);
}
out.flush();
out.close();
fis.close();
thanks!
maz
- 11
- Creating Forms in JSPHi ,
I want to create a sample aplication in JSP , which consits of
a basic form , and when the user gives in data in the form , the data
should be stored in the database, and then should be retrived back
when required. Can any one please help out in this as im a total
fresher in JSP .
Please help me out in this..
Thanks in ADVANCE
Sagar meesala
- 12
- Mouse position while drag&drop-operationHi swing experts!
I have the following problem:
I want to move a custom Transferable via Drag&Drop from a JTree to a
JPanel.
The transferable should be shown on the JPanel on the position the
mouse is released.
The trouble is, I can't determine the mouse position on the JPanel.
The mouseListener and mouseMotionListener-routines on the JPanel
obviously don't work while in a standard-java-drag&drop operation.
For example: The JPanel doesn't fire a mouseEntered(..)-Event, when the
panel is entered during a drag&drop-operation.
So, without Mouse-Events, how do I get the drop-coordinates relative to
the JPanel?
Any clues?
Thanks in advance! Your help is very appreciated.
Best,
Michael
- 13
- grid of JLabelsI want to make a grid of JLabels. I want to have 4 rows and 4
columns.Any ideas?
thanks in advance
- 14
- Acknowledgment class/deviceWe assume of having a device that generically we model with the Device
class and that will be best specified with the class VCR extension of
Device.
Moreover we assume of having an application (class) Host that knows the
class Device but not VCR;
I would to make so that the device recognizes himeself (based on its
property/features) and that the class Host make an istance of VCR.
Something like
Device dev = new VCR(... pars ...);
In practical on different devices I'll have the same classes Device and
Host and moreover for everyone device I'll have a specific class
extension of Device (is VCR, PC, Freezer etc.).
The class extension could be in one specific folder.
How to make?
Also ideas, suggestions, link
thanks
- 15
- javax.comm - SerialPort ProlemHi,
I tried to install the comm-extensions (with Java 1.5) and copied my files:
win32com.dll -> \myjdk\jre\bin
javax.comm.properties -> \myjdk\jre\lib
comm.jar -> \myjdk\jre\lib\ext
I'm using Eclipse.
Now to my problem:
A piece of my code:
portList = CommPortIdentifier.getPortIdentifiers();
try {
portId = CommPortIdentifier.getPortIdentifier( name );
} catch(Exception e) {System.out.println("error on comportIdentifier");}
After executing the first line portList is empty and 2 lines later a
NoSuchPortException is thrown -
it seems that I did something wrong because I don't get any portIdentifiers
at all ... but after searching for hours in the internet I only found hints
where to copy the files but nothing more ...
I would be glad if someone could help me!!
btw: I'm using WinXP
Thomas Pototschnig
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